[PATCH for-4.9.y 04/10] mwifiex: report error to PCIe for suspend failure

[Amit Pundir <amit.pundir@linaro.org>]

From: Amitkumar Karwar <akarwar@marvell.com>

commit 5190f2e405919cd30ba2f12c58129fb2d71cd6b6 upstream.

When host_sleep_config command fails, we should return an error to
PCIe, instead of continuing (and possibly panicking, when we try to keep
processing a timed-out ioctl after we return "successfully" from
suspend).

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Tested-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
---
 drivers/net/wireless/marvell/mwifiex/pcie.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c
index 8b70c909ecbb..cb681b265b10 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie.c
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.c
@@ -101,7 +101,6 @@ static int mwifiex_pcie_suspend(struct device *dev)
 {
 	struct mwifiex_adapter *adapter;
 	struct pcie_service_card *card;
-	int hs_actived;
 	struct pci_dev *pdev = to_pci_dev(dev);
 
 	if (pdev) {
@@ -117,7 +116,14 @@ static int mwifiex_pcie_suspend(struct device *dev)
 
 	adapter = card->adapter;
 
-	hs_actived = mwifiex_enable_hs(adapter);
+	/* Enable the Host Sleep */
+	if (!mwifiex_enable_hs(adapter)) {
+		mwifiex_dbg(adapter, ERROR,
+			    "cmd: failed to suspend\n");
+		adapter->hs_enabling = false;
+		return -EFAULT;
+	}
+
 	flush_workqueue(adapter->workqueue);
 
 	/* Indicate device suspended */
-- 
2.7.4